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贵县地处南亚热带,是双季稻生产区,早稻全生育期从三月初至七月上旬,大于12℃活动积温2900—3100℃、日照时数450—550小时、降水量600—800毫米,气候条件比较好。但是过去对气候规律认识不够,在早稻生产上存在不同程度的盲目性,加上其他措施不当,产量年际变化较大。为了摸清早稻丰、欠年的气候条件,本文将历年早稻单产和气候条件关系进行定性相关分析,从中找出影响早稻产量的关键期和关键因子,以便采取措施趋利避害,提高产量。
Guizhou is located in the southern subtropics, is a double cropping rice production area, early rice full growth period from early March to early July, greater than 12 ℃ active accumulated temperature 2900-3100 ℃, sunshine hours 450-550 hours, precipitation 600-800 mm Climatic conditions are better. However, in the past, there was not enough understanding of the climate laws and there was some degree of blindness in the production of early rice. Combined with other improper measures, the output varied greatly from one year to the next. In order to find out the climatic conditions of early rice abundance and old age, this paper qualitatively analyzes the relationship between yield and climatic conditions of early rice in the past years, and finds out the key period and key factors that affect the yield of early rice so as to take measures to avoid disadvantages and increase yield.